数组去重 Java

import java.util.Scanner;

public class work {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		System.out.println("该系统可记录n个不同的数，若相同则自动删除");
		Scanner input =new Scanner(System.in);
		System.out.print("请输入不同元素个数：");
		int length =input.nextInt();
		int[] shu =new int[length];
		int q = 0; 
		for(int a=0;a